Scalability Issues, Amdahl’s Law & Communication Methods
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Questions and Answers

What is the main property of a system that is scalable?

  • It can handle a growing amount of work by adding resources (correct)
  • It decreases in performance after adding resources
  • It connects different working units economically
  • It provides historical information

    • Which type of computing involves working together from different places connected via a network?

  • Asynchronous Computing
  • Vertical Scaling
  • Parallel Computing
  • Distributed Computing (correct)

    • Why is it essential to understand the differences between Synchronous and Asynchronous Communication?

  • To know the historical background of computing
  • To effectively handle a growing amount of work
  • To determine the effectiveness of scalability (correct)
  • To improve resource sharing and collaboration

    • In which scenario would a system be considered not scalable?

    <p>When there is a decrease in performance after adding more resources</p> Signup and view all the answers

    What is the purpose of making better use of underlying parallel hardware in parallel computing?

    <p>To handle complex problems more efficiently</p> Signup and view all the answers

    Which law describes the maximum improvement that can be achieved when only a part of the system is improved?

    <p>Amdahl’s Law</p> Signup and view all the answers

    What does physical scalability refer to in a system?

    <p>Adding or removing more users and resources easily</p> Signup and view all the answers

    Which dimension of scalability is about the ability to maintain effectiveness during expansion to a larger region?

    <p>Geographic Scalability</p> Signup and view all the answers

    What does scale out (horizontal) mean in terms of system resources?

    <p>Adding more nodes to the system</p> Signup and view all the answers

    When can we say that scalability is not achieved in a system?

    <p>When system performance decreases after adding resources</p> Signup and view all the answers

    What does heterogeneous scalability refer to in a system?

    <p>Adopting components from different vendors</p> Signup and view all the answers

    Which type of scalability involves the ability to adopt new generations of components?

    <p>Generation Scalability</p> Signup and view all the answers

    What does the term 'bottleneck' refer to in computing?

    <p>A computing device with a single component slowing down overall performance</p> Signup and view all the answers

    Why do we typically install SSDs instead of HDDs in computing devices?

    <p>To have a quicker response from secondary storage devices</p> Signup and view all the answers

    What does Amdahl's law predict in parallel computing?

    <p>The theoretical speedup in latency of task execution with improved system resources</p> Signup and view all the answers

    Who is Amdahl's law named after?

    <p>Gene Amdahl</p> Signup and view all the answers

    Which formula represents Amdahl's law?

    <p>$S_{latency} = \frac{1}{p + \frac{1-p}{s}}$</p> Signup and view all the answers

    In Amdahl’s law, what does 'p' represent?

    <p>The proportion of execution time that the part benefiting from improved resources originally occupied</p> Signup and view all the answers

    What is the formula for calculating the overall speedup using Amdahl's law?

    <p>S = 1 / (1 - p) + (p / s)</p> Signup and view all the answers

    What happens in synchronous communication between a Client and a Server?

    <p>The client is blocked until the operation completes.</p> Signup and view all the answers

    In synchronous communication, how is data typically sent?

    <p>In the form of blocks or frames.</p> Signup and view all the answers

    What is the minimum execution time for a parallelized program according to the text?

    <p>It cannot be less than the critical time period.</p> Signup and view all the answers

    In asynchronous communication, what happens when a Client makes a request to the Server?

    <p>The client can continue with other activities without waiting.</p> Signup and view all the answers

    What characterizes transmission in asynchronous communication?

    <p>Fast and economical.</p> Signup and view all the answers

    In synchronous communication, what is the role of start and stop bits in transmitting data?

    <p>They impose extra overhead during data transmission.</p> Signup and view all the answers

    What is a characteristic of asynchronous communication that distinguishes it from synchronous communication?

    <p>No need to wait for completion of transmission to receive a response.</p> Signup and view all the answers

    Which type of transmission leads to low latency due to real-time communication?

    <p>Synchronous transmission</p> Signup and view all the answers

    What is a disadvantage of synchronous transmission compared to asynchronous transmission?

    <p>High latency due to processing time and waiting for data availability.</p> Signup and view all the answers

    How do errors get detected and corrected in asynchronous communication?

    <p>When the data is received</p> Signup and view all the answers

    Which type of communication requires the transmission lines to remain empty during gaps in character transmission?

    <p>Synchronous communication</p> Signup and view all the answers

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